Worldwide Lighting W83501C20 is a crystal chandelier that comes with detailed instructions on how to properly install it. It is made of delicate metal and crystal components, so extreme caution should be exercised during unpacking and installation. The chandelier requires 110v-130v/60Hz power and E12/40W maximum bulbs. It is important to connect the black or red wire of the lighting to the live wire, the white or blue wire to the neutral wire, and the double-colored (or bare copper) wire to the ground wire.